Finding the Fourth Proportional to 204,563.80, 306,845.70 and 115,990.30
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Solution
The fourth proportional to 204,563.80, 306,845.70 and 115,990.30 is: 173,985.45
Step by Step Solution
- Step 1: Write the proportion equation
204,563.80 : 306,845.70 = 115,990.30 : x - Step 2: Convert to fraction form
204,563.80/306,845.70 = 115,990.30/x - Step 3: Cross multiply
204,563.80x = 306,845.70 × 115,990.30 - Step 4: Simplify right side
204,563.80x = 35,591,124,796.71 - Step 5: Solve for x
x = 35,591,124,796.71/204,563.80 - Step 6: Final answer
x = 173,985.45
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.